High-temperature-resistant rotational flow twisted blade premixing burner

Abstract

The utility model discloses a high-temperature-resistant rotational flow twisted blade premixing burner which comprises a premixing shell, a lower base is fixedly installed at the bottom end of the premixing shell, a flow guide chamber is arranged in the premixing shell, a premixing chamber is arranged in the lower base, gas inlets are formed in the outer walls of the two sides of the lower base, connecting flanges are fixedly installed on the outer walls of the gas inlets, and the gas inlets are communicated with the premixing chamber through the connecting flanges. Air inlets are fixedly formed in the two sides of the lower surface of the lower base, a premixing motor is fixedly installed between the two air inlets and located on the outer wall of the lower base through bolts, an output shaft of the premixing motor is inserted into the lower base, and a plurality of evenly-distributed twisted blades are fixedly installed on the outer wall of the output shaft of the premixing motor through welding; the spiral-flow type pre-mixing uniform material effect is achieved, gas and air can be mixed more evenly and thoroughly, the actual use effect of gas and air inlet pre-mixing is achieved, and the combustion efficiency and combustion quality of follow-up pre-mixed gas can be improved through the pre-mixing quality and uniformity of the pre-mixed gas.

Description

TECHNICAL FIELD

[0001] The utility model relates to premix burner technical field, concretely is high temperature resistant swirl twist vane premix burner. BACKGROUND

[0002] Premix burner is a kind of combustion equipment, and its working principle is that fuel and oxygen (or air) are premixed into uniform mixture, and this combustible mixture is called premixed gas.The process that premixed gas is ignited and burns in burner is called premix combustion;

[0003] The structure of premix burner usually includes atomizer, premixing chamber (fog chamber) and combustion head.Sample, fuel gas and combustion-supporting gas are mixed in premixing chamber first, then are delivered to combustion head to burn, and produce laminar flame.This flame has the characteristics of stable flame, low noise and small background, so it is widely used;

[0004] The premix structure is not provided in the inside of the traditional premix burner when using, so that the premix effect of air and fuel gas is poor, and there is the use condition that combustion efficiency is low and combustion is insufficient when burning, for this purpose, the utility model provides high temperature resistant swirl twist vane premix burner. INVENTION CONTENTS

[0005] The utility model discloses a high temperature resistant swirl twist vane premix burner to solve the problems in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: high temperature resistant swirl twist vane premix burner, including premix casing, the bottom end fixed mounting of premix casing has lower base, the inside of premix casing and lower base is all hollow structure design, the inside of premix casing and lower base intercommunication, the inside of premix casing is flow guide chamber, the inside of lower base is premix chamber, the both sides outer wall of lower base is all set up and has gas inlet, the outer wall of gas inlet is fixedly installed with the connecting flange, the both sides of lower base lower surface is fixedly installed with air inlet, two the air inlets between and located the outer wall of lower base are fixedly installed with premix motor through bolt, the output shaft of premix motor inserts lower base inside, the output shaft outer wall of premix motor is fixedly installed with several even distribution's twist vane through welding, the upper of twist vane and located the inside of premix casing fixedly installs and has first stage flow uniform plate.

[0007] Preferably, the inside of the flow guide chamber is fixedly installed with three layers of flow guide plates that are symmetrically distributed at equal intervals.

[0008] Preferably, the inside of the top end of the premix casing is fixedly installed with a second-stage flow uniform plate, and a plurality of uniformly distributed flow uniform holes are formed in the second-stage flow uniform plate and the first-stage flow uniform plate.

[0009] Preferably, an upper mounting base is fixedly installed on the top outer wall of the premixed shell.

[0010] Preferably, the upper surface of the upper mounting base is provided with a vent groove, the vent groove is interconnected with the interior of the premixed shell, and a vent plate is fixedly installed inside the vent groove, the vent plate being provided with a plurality of evenly distributed throttling grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The twisted blade of this invention is designed with a large diameter curved blade. By rotating the twisted blade, the internal fuel gas and air can be uniformly premixed and stirred, achieving a swirling premixing and homogenization effect. This makes the fuel gas and air mix more evenly and thoroughly, achieving the practical effect of fuel gas and air intake premixing. Through the premixing quality and uniformity of the premixed gas, the combustion efficiency and combustion quality of the subsequent premixed gas can be improved, avoiding incomplete combustion and improving the combustion effect of the premixed gas.

[0013] Meanwhile, the premixed gas can be more uniformly introduced by the first-stage and second-stage flow equalization plates, thereby improving the subsequent combustion quality and efficiency. Finally, the throttling groove is provided on the throttling plate. Under the throttling conditions of the throttling groove, static pressure balance can be achieved, so that the velocity and flow rate can be kept consistent when the mixed gas actually flows out of the throttling plate. In turn, during the combustion of the mixed gas, it can be more complete and the flame can be more uniform and the flame height can be consistent, thus improving the combustion quality of the mixed gas.

[0014] This utility model has a simple overall structure, can effectively complete the uniform premixing of gas and air, improve the premixing quality and uniformity of gas and air, and has low manufacturing and maintenance costs, making it suitable for widespread use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external three-dimensional structure of the premixed burner according to an embodiment of the present invention;

[0016] Figure 2 This is a bottom view of the premixed burner according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the premixed burner according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of the lower base according to an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the premixed burner gas flow indicator structure according to an embodiment of the present invention.

[0020] In the figure: 1, premix shell; 2, lower base; 3, gas inlet; 4, air inlet; 5, premix motor; 6, premix chamber; 7, twisted blade; 8, primary flow equalization plate; 9, flow guide chamber; 10, flow guide plate; 11, secondary flow equalization plate; 12, upper mounting base; 13, fire hole plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like is the orientation or position relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium; can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] Please refer to Figures 1-5 The utility model provides an embodiment: a kind of high-temperature-resistant rotational flow twisted blade premix burner, premix shell 1 is included, lower base 2 is fixedly installed in the bottom end of premix shell 1, the inside of premix shell 1 and lower base 2 is hollow structure design, the inside of premix shell 1 and lower base 2 is intercommunication, the inside of premix shell 1 is flow guide chamber 9, the inside of lower base 2 is premix chamber 6, gas inlet 3 is set on the outer wall of both sides of lower base 2, wherein, to facilitate the injection of gas, connecting flange is fixedly installed on the outer wall of gas inlet 3, by the connecting flange set up can connect external gas supply pipeline, so as to facilitate the injection of fuel gas;

[0025] Wherein, with reference to the description of the accompanying drawings Figure 3 And Figure 4 As shown in the drawings, the lower surface of the lower base 2 is fixedly installed with air inlets 4 on both sides, the air inlets 4 are used for injecting air, and the two air inlets 4 are fixedly installed with a premixing motor 5 on the outer wall of the lower base 2 through bolts, the output shaft of the premixing motor 5 is inserted into the inside of the lower base 2, and a plurality of uniformly distributed twisted blades 7 are fixedly installed on the outer wall of the output shaft of the premixing motor 5 through welding, and the twisted blades 7 are made of high-temperature-resistant metal material;

[0026] The premixing motor 5 can work when the output shaft of the premixing motor 5 drives the plurality of twisted blades 7 to rotate, the twisted blades 7 of the utility model are designed with large-diameter curved blades, the internal gas and air can be uniformly premixed and stirred through the rotation of the twisted blades 7, the premixing effect of the rotating flow type can be achieved, so that the gas and air can be mixed more uniformly and completely, the actual use effect of the premixing of the gas and air intake can be achieved, the premixing quality and uniformity of the premixed gas can be improved, the combustion efficiency and combustion quality of the subsequent premixed gas can be improved, and the situation of insufficient combustion can be avoided, and the combustion effect of the premixed gas is improved.

[0027] In the embodiment, in order to uniformly intake the premixed gas, a first flow uniformizing plate 8 is fixedly installed above the twisted blades 7 and in the inside of the premixing shell 1, the first flow uniformizing plate 8 can make the intake of the premixed gas more uniform, has a good flow uniformizing use effect, and improves the subsequent combustion quality.

[0028] In the embodiment, in order to guide the premixed gas of the air inlet upward, with reference to the description of the accompanying drawings Figure 3 As shown in the drawings, three layers of flow guide plates 10 are fixedly installed in the inside of the flow guide chamber 9, the three layers of flow guide plates 10 form an S-shaped flow guide air inlet channel, and the flow guide plates 10 can guide the premixed gas to flow into the air inlet;

[0029] Wherein, the gas intake direction is shown with reference to the description of the accompanying drawings Figure 5 .

[0030] In the embodiment, a second flow uniformizing plate 11 is fixedly installed in the inside of the top end of the premixing shell 1;

[0031] Wherein, a plurality of uniformly distributed flow uniformizing holes are formed in the first flow uniformizing plate 8 and the second flow uniformizing plate 11, so as to improve the flow uniformizing effect of the premixed gas;

[0032] And the second flow uniformity plate 11 can be set to carry out the second uniform intake flow treatment on the premixed gas after the gas is guided to enter, improve the uniformity effect of the premixed gas, so that the subsequent combustion quality and combustion efficiency can be improved.

[0033] In the embodiment, in order to ensure the normal use effect of the premixer, the top outer wall of the premixing shell 1 is fixedly provided with an upper mounting seat 12, the upper surface of the upper mounting seat 12 is provided with a fire slot, the fire slot is communicated with the inside of the premixing shell 1, the inside of the fire slot is fixedly provided with a fire plate 13, the fire plate 13 is provided with a throttling groove, under the throttling condition of the throttling groove, static pressure balance can be achieved, so that the consistency of the speed and the flow rate can be maintained when the mixed gas actually flows out of the fire plate 13, and then when the mixed gas is burned, sufficient combustion, uniform flame burning and consistent flame height are achieved, and the combustion quality of the mixed gas is improved.

[0034] Working principle: when the premixer is used, the gas inlet 3 can be used to inject gas, and the air inlet 4 can be used to inject air at the same time, the synchronously injected gas and air can enter the premixing chamber 6 inside the lower base 2, at this time, the premixing motor 5 can work, the premixing motor 5 drives the plurality of twisted blades 7 to rotate when the output shaft rotates, the twisted blades 7 of the premixer are designed as large-diameter curved blades, so that the gas and air inside can be uniformly premixed and stirred by the rotation of the twisted blades 7.

[0035] The premixed gas can enter the inside of the flow guide chamber 9 through the first flow uniformity plate 8, the first flow uniformity plate 8 can make the premixed gas intake work more uniformly, has a good flow uniformity effect, and improves the subsequent combustion quality.

[0036] The mixed gas after being guided by the flow guide plate 10 in the flow guide chamber 9 enters the inside of the upper mounting seat 12 through the second flow uniformity plate 11, and the second flow uniformity plate 11 can be set to carry out the second uniform intake flow treatment on the premixed gas after the gas is guided to enter, improve the uniformity effect of the premixed gas.

[0037] Meanwhile, the inside of the upper mounting seat 12 is provided with the fire plate 13, the fire plate 13 is provided with the throttling groove, under the throttling condition of the throttling groove, static pressure balance can be achieved, so that the consistency of the speed and the flow rate can be maintained when the mixed gas actually flows out of the fire plate 13, and then when the mixed gas is burned, sufficient combustion, uniform flame burning and consistent flame height are achieved, and the combustion quality of the mixed gas is improved.

[0038] The gas intake direction can be specifically referred to the description and the accompanying drawings. Figure 5

[0039] ​In summary, the premixing burner can uniformly premix and stir the gas and air in the interior through the rotation of the twisted blade 7, can have a cyclone type premixing and uniform material effect, so that the gas and air can be mixed more uniformly and completely, has the actual use effect of gas and air intake premixing, through the premixing quality and uniformity of the premixing gas, the combustion efficiency and combustion quality of the subsequent premixing gas can be improved, the insufficient combustion condition is avoided, and the combustion effect of the premixing gas is improved.

[0040] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A high temperature resistant swirl twist vane premix burner comprising a premix housing (1), characterized in that, The bottom end of the premix shell (1) is fixedly installed with a lower base (2), the premix shell (1) and the lower base (2) are both hollow structure design, the premix shell (1) and the lower base (2) are intercommunication, the inside of the premix shell (1) is a flow guide chamber (9), the inside of the lower base (2) is a premix chamber (6), the both sides of the lower base (2) are provided with gas inlets (3), the lower surface of the lower base (2) is fixedly installed with air inlets (4), the premix motor (5) is fixedly installed on the outer wall of the lower base (2) between the two air inlets (4), the output shaft of the premix motor (5) is inserted into the lower base (2), a plurality of twisted blades (7) are fixedly installed on the outer wall of the output shaft of the premix motor (5), the upper of the twisted blades (7) is fixedly installed with a first flow uniforming plate (8) in the premix shell (1).

2. The high temperature resistant swirl twist vane premix combustor of claim 1, wherein: The inside of the flow guide chamber (9) is fixedly installed with three layers of flow guide plates (10) which are symmetrically distributed at equal intervals.

3. The high temperature resistant swirl twist vane premix combustor of claim 1, wherein: The top end of the premix shell (1) is fixedly installed with a second flow uniforming plate (11), a plurality of flow uniforming holes are uniformly distributed on the first flow uniforming plate (8) and the second flow uniforming plate (11).

4. The high temperature resistant swirl twist vane premix combustor of claim 1, wherein: The top end of the premix shell (1) is fixedly installed with an upper mounting base (12).

5. The high temperature resistant swirl twist vane premix combustor of claim 4, wherein: The upper surface of the upper mounting base (12) is provided with a fire slot, the fire slot is intercommunication with the premix shell (1), the inside of the fire slot is fixedly installed with a fire plate (13), a plurality of throttling grooves are uniformly distributed on the fire plate (13).

6. The high temperature resistant swirl twist vane premix combustor of claim 1, wherein: The outer wall of the gas inlet (3) is fixedly installed with a connecting flange.

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